Cookies Policy
X

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies.

I accept this policy

Find out more here

Diurnal Variation of Spacing and Foraging Behaviour in Tropheus Moorii (Cichlidae) in Lake Tanganyika, Eastern Africa

No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
The full text of this article is not currently available.

Brill’s MyBook program is exclusively available on BrillOnline Books and Journals. Students and scholars affiliated with an institution that has purchased a Brill E-Book on the BrillOnline platform automatically have access to the MyBook option for the title(s) acquired by the Library. Brill MyBook is a print-on-demand paperback copy which is sold at a favorably uniform low price.

Access this article

+ Tax (if applicable)
Add to Favorites
You must be logged in to use this functionality

image of Netherlands Journal of Zoology
For more content, see Archives Néerlandaises de Zoologie (Vol 1-17) and Animal Biology (Vol 53 and onwards).

Diurnal variation of behaviour was investigated in the epilithic algae feeder Tropheus moorii in Lake Tanganyika. Territories, home ranges and four behavioural categories were recorded during the diurnal cycle. All four behavioural categories (foraging, locomotory activity, resting behaviour and total social interactions) followed a diurnal pattern. Foraging activity was maximum between 12.30 h and 16.30 h, and the observed diurnal pattern was similar to the rhythm found in a great number of marine algae feeders. In contrast to previous observations individuals displayed both territorial and non-territorial activities during the day, expressed by specific colour- and behaviour patterns. The time spent in the own territories also varied with day time and was maximum between 12.30 h and 16.30 h. Non-territorial aggregations of several individuals outside territories were particularly observed during dawn and dusk. Territories may primarily function as feeding territories since foraging was the most frequent behaviour. Non-territorial activities may allow individuals to utilize additional food sources and the aggregation of several individuals at dawn and dusk may indicate their behaviour at night. The observed diurnal rhythms of behaviour, together with the previously described complex social behaviour, and the altered mating system of Tropheus, may have evolved as a consequence of extreme sedentarity and close association to rocky substrate in order to optimize resource utilization.

Affiliations: 1: Department of Zoology, University of Innsbruck, Austria

10.1163/156854295X00375
/content/journals/10.1163/156854295x00375
dcterms_title,pub_keyword,dcterms_description,pub_author
6
3
Loading
Loading

Full text loading...

/content/journals/10.1163/156854295x00375
Loading

Data & Media loading...

http://brill.metastore.ingenta.com/content/journals/10.1163/156854295x00375
Loading

Article metrics loading...

/content/journals/10.1163/156854295x00375
1994-01-01
2016-12-08

Sign-in

Can't access your account?
  • Tools

  • Add to Favorites
  • Printable version
  • Email this page
  • Subscribe to ToC alert
  • Get permissions
  • Recommend to your library

    You must fill out fields marked with: *

    Librarian details
    Your details
    Why are you recommending this title?
    Select reason:
     
    Netherlands Journal of Zoology — Recommend this title to your library
  • Export citations
  • Key

  • Full access
  • Open Access
  • Partial/No accessInformation